燃料化学学报2012，Vol.40Issue(1)：43-47,5.
金属阳离子对聚丙烯酰胺溶液黏度的影响及其降黏机理研究
Effect of metal ions on the viscosity of polyacrylamide solution and the mechanism of viscosity degradation
李美蓉 1柳智 1宋新旺 2马宝东 2张文2
作者信息
- 1. 中国石油大学(华东)理学院,山东青岛266555
- 2. 胜利油田分公司地质科学研究院,山东东营257015
- 折叠
摘要
Abstract
Hydrolyzed polyacrylamide (HPAM) is a kind of polymer used for displacement of reservoir oil, while the oilfield sewage used to prepare HPAM may reduce its viscosity and impact the displacement efficiency. In this work, the HPAM solution was prepared according to the metal ions composition in Chengdong Oilfield sewage and the effect of metal ions on the viscosity of HPAM solution was investigated. It was found that the influencing extent of various metal ions on the viscosity of HPAM solution is in the order of Na+> Fe2+> Ca2+> K+> Mg2+. IR and SEM characterization results suggested that Na*, K+, Ca2+ and Mg2+ interact with the carboxylate anions, which may decrease the HPAM molecular charge density, make the polymer curl, reduce the solvation ability of polar groups, and release a large number of "bounded" water; these lead to the degradation of HPAM solution viscosity. On the other side, the viscosity degradation by Fe2+ is attributed to its interaction with oxygen in sewage, which initiates a free-radical reaction and causes the disintegration of the polymer chains.关键词
聚丙烯酰胺/黏度/金属阳离子/降黏机理/矿化度Key words
hydrolyzed polyacrylamide/ viscosity/ metal ions/ mechanism of viscosity degradation/ salinity分类
能源科技引用本文复制引用
李美蓉,柳智,宋新旺,马宝东,张文..金属阳离子对聚丙烯酰胺溶液黏度的影响及其降黏机理研究[J].燃料化学学报,2012,40(1):43-47,5.
